An elevated blood glucose level one hour after the oral glucose tolerance test (OGTT) signals a critical metabolic state—even before prediabetes. Affected individuals respond particularly well to ...

Blood glucose levels vary, depending on a person’s health status and whether they have eaten. People without diabetes typically have between 72–140 milligrams of glucose per 1 deciliter of blood.

The A1C test can also be used to diagnose gestational diabetes in the first trimester.

This "secretory-reserve hypothesis" may be tested by examination of the plasma insulin response to ingested glucose in subjects with normal and abnormal results on the tests. Since the fractional rate ...